CN103887041A - Surface-mounted type common-mode choker and manufacturing method thereof - Google Patents
Surface-mounted type common-mode choker and manufacturing method thereof Download PDFInfo
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- CN103887041A CN103887041A CN201410015276.7A CN201410015276A CN103887041A CN 103887041 A CN103887041 A CN 103887041A CN 201410015276 A CN201410015276 A CN 201410015276A CN 103887041 A CN103887041 A CN 103887041A
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Abstract
The invention discloses a surface-mounted type common-mode choker and a manufacturing method thereof. The surface-mounted type common-mode choker comprises a magnetic core, a cover plate, a first metal coil and a second metal coil. The first metal coil and the second metal coil are welded to the magnetic core and are mutually twisted together to form a coil block which winds the magnetic core. The invention further discloses the manufacturing method for the surface-mounted type common-mode choker. By the arrangement, insertion loss performance and balance performance of the products are improved, and the surface-mounted type common-mode choker can be applied to an automobile electronic network system; configuration requirements on the coils are reduced, batch production of the surface-mounted type common-mode chokers can be performed through a mechanical equipment machine, production cost is further lowered, and production efficiency of the products is improved.
Description
Technical field
The present invention relates to a kind of SMD common mode choke and manufacture method thereof, be particularly applied to the SMD common mode choke of high-performance and the manufacture method thereof of automotive electronics network system.
Background technology
The application of common mode choke is very extensive, in power-supply system, in high speed transmission of signals system, all can use.SMD common mode choke is mainly used in high speed transmission of signals system at present, as USB2.0, and USB3.0, HDMI, the high speed signal interfaces such as DVI, mainly play the effect that suppresses common-mode noise.Also can be used as in addition Ba Lun and use, play the transformation of single-ended signal and differential signal.Traditional use field, it is mainly common code impedance that the electric property of common mode choke is required, differential mode impedance, D.C. resistance etc., traditional coiling technology for these indexs, manufacturing technology generally can reach.But in some fields higher to requirement on electric performance, as automotive electronics network system, to the inductance of common mode choke, Insertion Loss, and signal-balanced property performance requirement is all very high, the common mode choke being applied at present in this system is the choke of the magnet ring structure of manual coiling mostly, because being makes by hand, so exist efficiency low, cost is high, the defects such as properties of product consistency is poor, client wishes to realize automated production, to reduce costs, improve the consistency of product, but the electrical property of traditional SMD common mode choke does not reach again requirement, this has just proposed new challenge to industry.
In industry, use more technical scheme as follows at present:
As shown in Figure 1, traditional SMD common mode choke comprises magnetic core 3 ', cover plate 4 ' and the first wire coil 1 ', the second wire coil 2 ', when manufacture by flat two wire coil layerings around, first around the second wire coil 2 ', around full magnetic core 3 ' center pillar, then on the second wire coil 2 ' around first wire coil 1 ' (as shown in Figure 1) of the same number of turns.The product coiling of this structure evenly, product Insertion Loss performance can be very significantly improved, but the coiling uniformity requirement to two coils is quite high, as long as slightly put mixed and disorderly when two groups of coil windings, the Insertion Loss performance of product can decline greatly, be unfavorable for batch production, and this scheme is not improved to the balance performance of product, can not meet the performance requirement of automotive electronics network system to common mode choke.
For the automotive electronics feature higher to balance performance requirement, TDK company of Japan has released a kind of common mode choke (ACT45L series) of new structure, its cross section view is as shown in 2, and its winding structure is two sections of coilings before and after two groups of coils 1 ', 2 ' are divided into.Introduce according to the popularization data of TDK, the balance performance of ACT45L series of products has larger improvement.But analyze with experience from theoretical, ACT45 series of products, due to gapped between the coil two sections of coilings, can cause the increase of leakage inductance, thereby increase the Insertion Loss of product; In addition, consistency and the regularity requirement of the winding mode of this product to coil configuration is very high, has increased the difficulty of producing.Can say, the raising of the balance performance of the ACT45L of TDK company series of products is to reduce Insertion Loss performance and to reduce production efficiency as cost.
Summary of the invention
A technical problem to be solved by this invention is the defect that overcomes the prior art in background technology, a kind of SMD common mode choke that can effectively improve Insertion Loss and signal-balanced property performance is provided, and this SMD common mode choke requires lower to arranging of coil, can produce in batches by machine, therefore production cost is lower.
Another technical problem to be solved by this invention is to provide a kind of method of manufacturing SMD common mode choke, the produced SMD common mode choke of the method can effectively improve its Insertion Loss performance and balance performance, and the method requires lower to the coil configuration of SMD common mode choke, can produce in batches by machine, therefore production cost is lower.
Know-why of the present invention is as follows:
The first wire coil of SMD common mode choke and the second wire coil are twisted into coil block, have the following advantages:
1. can reduce the stray capacitance between coil, thereby improve the resonance frequency of SMD common mode choke, and then improve its Insertion Loss performance;
2. can increase by two groups of consistency between coil, thus the phase difference when reducing signal and transmitting on first, second wire coil, and then improve the balance performance of SMD common mode choke;
3. due to first, second wire coil is twisted together, thereby two groups of coils that make to be wrapped in same week of magnetic core keep relative stability and are close together, therefore lower to the demand of arranging of coil.
SMD common mode choke provided by the invention is solved by the following technical programs:
A kind of SMD common mode choke, comprise magnetic core, cover plate, the first wire coil and the second wire coil, the first wire coil and the second wire coil are welded on magnetic core, described the first wire coil and described the second wire coil twist together formation coil block mutually, and described coil block is wrapped on magnetic core.
Further, described magnetic core comprises first signal input electrode, secondary signal input electrode, first signal output electrode and secondary signal output electrode; Described first wire coil one end is welded on first signal input electrode, and the other end is welded on first signal output electrode; One end of described the second wire coil is welded on secondary signal input electrode, and the other end is welded on secondary signal output electrode.
Further, the surface of described the first wire coil and described the second wire coil scribbles insulating protective film.
Preferably, the every winding magnetic core of described coil block one week, described the first wire coil and described the second wire coil intersect once or once mutually.
Preferably, described magnetic core and cover plate are bonded together by glue (adhesive).
The method of the SMD common mode choke of manufacture provided by the invention is solved by the following technical programs:
Manufacture a method for SMD common mode choke, described SMD common mode choke comprises magnetic core, cover plate, the first wire coil and the second wire coil, and described magnetic core is provided with electrode, and described SMD common mode choke makes by following steps:
1) one end of the first wire coil and the second wire coil is welded on respectively on the electrode of magnetic core;
2) by the first wire coil and coil block of the mutual stranded formation of the second wire coil;
3) coil block is wrapped on magnetic core;
4) other end of the first wire coil and the second wire coil is welded on respectively on the electrode of magnetic core;
5) cover plate and magnetic core are fixed together.
By above-mentioned 5 steps, can be made into satisfactory SMD common mode choke.
Preferably, in step 3) in, described coil block is often wound on magnetic core one week, and described the first wire coil and described the second wire coil intersect once or once mutually.
Preferably, in step 3) in, comprise by the mode of individual layer coiling or sandwich wound coil block is wrapped on magnetic core.
Preferably, described coil block is to be wrapped on magnetic core by the mode of multilayer, multistage coiling, described step 3) comprise following sub-step:
3-1) coil block is wound around and subscribes the number of turns or distance around magnetic core in order to the other end from one end of magnetic core;
3-2) by coil block along step 3-1) contrary direction is wound around the number of turns or the distance of subscribing around magnetic core;
3-3) repeating step 3-1) to 3-2) until coil block is wound around the number of plies of subscribing on magnetic core;
3-4) repeating step 3-1) to 3-3) until coil block completes the sandwich wound of subscribing hop count on magnetic core.
Further, in step 5) in, comprise following sub-step:
5-1) cover plate is fixed on magnetic core by glue (adhesive);
5-2) SMD common mode choke is put into baking box toasts until cover plate is stabilized on magnetic core.
Compared with prior art, beneficial effect of the present invention is:
1. improved the Insertion Loss performance of SMD common mode choke;
2. reduce the demand of arranging to coil, can produce in batches SMD common mode choke by machine, and then reduce production cost, improved production efficiency;
3. the balance performance of having improved SMD common mode choke, can apply in automotive electronics network system.
Accompanying drawing explanation:
Fig. 1 is the generalized section of traditional SMD common mode choke;
Fig. 2 is the cross section view of the common mode choke (ACT45L series) of Japanese TDK company;
Fig. 3 is coil block winding of single layer in the one embodiment of the invention schematic diagram on magnetic core time;
Fig. 4 is another visual angle figure of Fig. 3;
Fig. 5 is the mutual schematic diagram when stranded of the coil block in Fig. 3;
Fig. 6 is the schematic diagram of coil block multilayer multistage of the present invention while being wound on magnetic core;
Fig. 7 is balance performance (Scd21) comparison diagram;
Fig. 8 is winding process starting end hanging wire schematic diagram in the embodiment 1 of the inventive method;
First, second wire coil starting end in Fig. 8 is welded on respectively the schematic diagram on magnetic core electrode by Fig. 9;
Figure 10 is by mutual first, second wire coil in Fig. 9 schematic diagram when stranded;
Figure 11 is that in Figure 10, winding process finishes to hold hanging wire schematic diagram;
The end end of first, second wire coil in Figure 11 is welded on respectively the schematic diagram on magnetic core electrode by Figure 12;
Cover plate is attached to the schematic diagram on the magnetic core in Figure 12 by Figure 13;
Figure 14 is the schematic diagram that completes the SMD common mode choke of acquisition according to the operation in the embodiment of the inventive method 1;
Figure 15 is the coiling schematic diagram of the inventive method embodiment 2 coil assembly wound core first paragraph ground floors;
Figure 16 is the coiling schematic diagram of the coil block wound core first paragraph second layer in Figure 15;
Figure 17 is the coiling schematic diagram of the 3rd layer of coil block wound core first paragraph in Figure 15;
Figure 18 is that the coil block in Figure 17 completes the second segment schematic diagram in when coiling;
Figure 19 is the schematic diagram that the coil block in Figure 18 completes the 3rd period of when coiling;
The end end of first, second wire coil in Figure 19 is welded on respectively the schematic diagram on magnetic core electrode by Figure 20;
Cover plate is attached to the schematic diagram on the magnetic core in Figure 20 by Figure 21;
Figure 22 is the schematic diagram that completes the SMD common mode choke of acquisition according to the operation in the embodiment of the inventive method 2.
Description of reference numerals:
1-the first wire coil; 2-the second wire coil; 3-magnetic core; 4-cover plate; 5-glue (adhesive); 6-first signal input electrode; 7-first signal output electrode; 8-secondary signal input electrode; 9-secondary signal output electrode; The curve that requires to common mode choke balance performance in 12-Automobile Network System; The flat balance performance curve around common mode choke of 13-traditional batch; 14-common mode choke of the present invention balance performance curve; 17-guide needle mouth; 18-guide needle mouth; 19-locates stitch; 20-locates stitch; 21-locates stitch.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the SMD common mode choke of the present invention and manufacture method thereof are further elaborated.
First the structure of the SMD common mode choke of the present invention is described.
As shown in Figures 3 to 5, be a preferred embodiment of the SMD common mode choke of the present invention.The SMD common mode choke of the present invention comprises magnetic core 3, cover plate 4, the first wire coil 1 and the second wire coil 2, and magnetic core and cover plate are fixed together by glue 5 (or other adhesives).
The first wire coil 1 and the second wire coil 2 are coated with insulating material, as insulating sleeve etc.In the present embodiment, the first wire coil 1 and the second wire coil 2 are the surperficial copper cash that scribbles insulation paint film, and internal diameter is 0.045mm, and external diameter is 0.055mm.These mutual stranded formation coil blocks of two wire coils (as shown in Figure 4), the starting end of the first wire coil 1 and end end are welded on respectively in first signal input electrode 6 and first signal output electrode 8, and the starting end of the second wire coil 2 and end end are welded on respectively in secondary signal input electrode 7 and the second output electrode 9.
As shown in Figure 3, Figure 4, the described coil block being made up of the first wire coil 1 and the second wire coil 2 is often around magnetic core one week, the first wire coil 1 and the second wire coil 2 intersect repeatedly (in theory mutually, as long as intersect 1 time, can increase and reduce intersection number of times according to actual conditions), the number of times that preferably intersects is 4～6 times.In addition, coil block can increase or reduce according to actual conditions around the number of turns of magnetic core.
As shown in Figure 5, for by the schematic diagram of the first wire coil 1 and the stranded formation coil block of the second wire coil 2, the stranded finger is here wound around two wire coils mutually.
The winding of coil block on magnetic core comprises winding of single layer (as shown in Figure 3, Figure 4) and multi-lay winding, multi-lay winding refer to coil block on magnetic core, be wound around two-layer or two-layer more than, to increase the inductance of coil block.Wherein, multi-lay winding also can be divided into multistage and be wound around to improve the balance performance of SMD common mode choke, as shown in Figure 6, that the coil block that the first wire coil 1 and the second wire coil 2 are formed is divided into three sections of (a sections, b section, c section) and carry out the SMD common mode choke forming after multi-lay winding.
As shown in Figure 7, for the SMD common mode choke in above-described embodiment and traditional batch flat around balance performance (Scd21) comparison diagram of SMD common mode choke.As can be seen from Figure, product of the present invention has improved the balance performance of common mode choke significantly, can meet the requirement of the balance performance to common mode choke in automotive networking, therefore can be applicable in automotive electronics network.
Next the method for manufacturing the SMD common mode choke of the present invention is elaborated.
As shown in Fig. 8 to Figure 14, for first embodiment of the inventive method, this embodiment describe in detail by coil block (the first wire coil 1 and the stranded formation of the second wire coil 2) winding of single layer on magnetic core 3 to make the step of SMD common mode choke.
Step 1) one end of the first wire coil and the second wire coil is welded on respectively on the electrode of magnetic core.
First the first wire coil 1 and second wire coil 2 one end are separately fixed on the location stitch 19 and location stitch 20 of spooling equipment (as coil winding machine); Then the first wire coil 1 and second wire coil 2 other ends are connected to respectively to guide needle mouth 17 and guide needle mouth 18; In the first signal input electrode 6 that then by equipment, the first wire coil 1 and the second wire coil 2 is hung in to magnetic core 3 and secondary signal input electrode 8 (as shown in Figure 7), then by plumb joint, the starting end of the first wire coil 1 and the second wire coil 2 is welded on respectively in first signal input electrode 6 and secondary signal input electrode 8 (as shown in Figure 8).
Step 2) by the first wire coil and coil block of the mutual stranded formation of the second wire coil.
By special control program control guide needle mouth 17 crisscross motions relative to guide needle mouth 18 on spooling equipment (as coil winding machine), make the first wire coil 1 and the second wire coil 2 mutually twist together (as shown in figure 10).
Step 3) coil block is wrapped on magnetic core;
Coil block is wrapped in to (as shown in figure 11) on magnetic core by order from left to right.
Step 4) other end of the first wire coil and the second wire coil is welded on respectively on the electrode of magnetic core;
At completing steps 3) after, by the other end of the first wire coil 1 and the second wire coil 2, by location stitch, (the first wire coil 1 is by location stitch 21 respectively, with reference to Figure 11, the location stitch of the second wire coil does not indicate in Figure 10) be hung in the first output electrode 7 and the second output electrode 9, then by plumb joint, the end end of the first wire coil 1 and the second wire coil 2 is welded on respectively in first signal output electrode 7 and secondary signal output electrode 9 (as shown in figure 12).
Step 5) cover plate and magnetic core are fixed together.
A first glue 5 (also can be other adhesives) on the two ends each point of the back side of magnetic core 3 (being relatively provided with on the contrary end face of end face of electrode), again cover plate 4 is fitted in to this end face cover plate 4 and magnetic core 3 are bonded together (as shown in figure 13), complete the assembling of SMD common mode choke; And then the product of having assembled puts baking box into and toast, after finishing, baking can obtain satisfactory SMD common mode choke (as shown in figure 14).
As shown in Figure 15 to Figure 22, for second embodiment of the inventive method, this embodiment describe in detail by coil block (the first wire coil 1 and the stranded formation of the second wire coil 2) multistage, multi-lay winding on magnetic core 3 to make the step of SMD common mode choke.The multistage coiling here refer to one section, interval between adjacent two sections of coil blocks larger not by the part magnetic core (as shown in figure 22) of coil winding.
The present embodiment is divided into three sections, three layers winding and describes on magnetic core 3 with coil block, one of ordinary skill in the art can be carried out segmentation number according to actual conditions, is wound around increase or the minimizing of the number of plies.
Step in the present embodiment and embodiment 1 is basic identical, and different places are:
As shown in figure 14, coil block is wrapped on magnetic core 3 by order from left to right (a1-a1 ' direction), after about 1/3rd (also can be other coil windings distances of reservation or the coil winding number of turns of subscribing) of magnetic core 3 length are located, stops; As shown in figure 16, now by dextrosinistral coil block order (a2 ' direction of-a2, with the contrary direction of a1-a1 ') (preferred version is identical with winding distance or the number of turns of a1-a1 ' direction to be wound around about 1/3rd core length, certainly, reverse-winding distance or the number of turns also can be different) to magnetic core 3 left ends; As shown in figure 17, again by order from left to right of coil block (a3-a3 ' direction, with the identical direction of a1-a1 ') be wrapped on magnetic core 3, until about 1/3rd places of core length, thereby completed the winding of a section, now the coil number of plies of a end is 3 layers.
Similarly, as shown in Figure 18, Figure 19, also can coil block be completed successively according to the winding method of a section to the winding of magnetic core b section, c section.
As shown in Figure 20 to 21, can be by the step 4 in embodiment 1), step 5) complete successively the welding, magnetic core 3 of coil block and the assembling of cover plate 4, finally obtain the SMD common mode choke (as shown in figure 22) of multistage, lattice coil coiling.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is only limited to these explanations.For general technical staff of the technical field of the invention; being equal to of making without departing from the inventive concept of the premise substitutes or obviously distortion; and performance or purposes are identical, all should be considered as belonging to the determined scope of patent protection of claims that the present invention submits to.
Claims (10)
1. a SMD common mode choke, comprise magnetic core, cover plate, the first wire coil and the second wire coil, the first wire coil and the second wire coil are welded on magnetic core, it is characterized in that: described the first wire coil and described the second wire coil twist together formation coil block mutually, and described coil block is wrapped on magnetic core.
2. SMD common mode choke as claimed in claim 1, is characterized in that: described magnetic core comprises first signal input electrode, secondary signal input electrode, first signal output electrode and secondary signal output electrode; Described first wire coil one end is welded on first signal input electrode, and the other end is welded on first signal output electrode; One end of described the second wire coil is welded on secondary signal input electrode, and the other end is welded on secondary signal output electrode.
3. SMD common mode choke as claimed in claim 1, is characterized in that: the surface of described the first wire coil and described the second wire coil scribbles insulating protective film.
4. SMD common mode choke as claimed in claim 1, is characterized in that: the every winding magnetic core of described coil block one week, described the first wire coil and described the second wire coil intersect once or once mutually.
5. SMD common mode choke as claimed in claim 1, is characterized in that: described magnetic core and cover plate are bonded together by glue.
6. manufacture the method for SMD common mode choke for one kind, described SMD common mode choke comprises magnetic core, cover plate, the first wire coil and the second wire coil, described magnetic core is provided with electrode, it is characterized in that: described SMD common mode choke makes by following steps:
1) one end of the first wire coil and the second wire coil is welded on respectively on the electrode of magnetic core;
2) by the first wire coil and coil block of the mutual stranded formation of the second wire coil;
3) coil block is wrapped on magnetic core;
4) other end of the first wire coil and the second wire coil is welded on respectively on the electrode of magnetic core;
5) cover plate and magnetic core are fixed together.
7. the method for the SMD common mode choke of manufacture as claimed in claim 6, it is characterized in that: in step 3) in, described coil block is often wound on magnetic core one week, and described the first wire coil and described the second wire coil intersect once or once mutually.
8. the method for the SMD common mode choke of manufacture as claimed in claim 6, is characterized in that: in step 3) in, comprise by the mode of individual layer coiling or sandwich wound coil block is wrapped on magnetic core.
9. the method for the SMD common mode choke of manufacture as claimed in claim 6, is characterized in that: in step 3) in, described coil block is to be wrapped on magnetic core by the mode of multilayer, multistage coiling, described step 3) comprise following sub-step:
3-1) coil block is wound around and subscribes the number of turns or distance around magnetic core in order to the other end from one end of magnetic core;
3-2) by coil block along step 3-1) contrary direction is wound around the number of turns or the distance of subscribing around magnetic core;
3-3) repeating step 3-1) to 3-2) until coil block is wound around the number of plies of subscribing on magnetic core;
3-4) repeating step 3-1) to 3-3) until coil block completes the sandwich wound of subscribing hop count on magnetic core.
10. the method for the SMD common mode choke of manufacture as described in claim 6 to 9 any one, is characterized in that: in step 5) in, comprise following sub-step:
5-1) cover plate is fixed on magnetic core by glue (adhesive);
5-2) SMD common mode choke is put into baking box toasts until cover plate is stabilized on magnetic core.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366314A (en) * | 2001-01-12 | 2002-08-28 | 东光株式会社 | Leakage magnetic type power conversion transformer |
| CN1405803A (en) * | 2001-08-09 | 2003-03-26 | 株式会社村田制作所 | Wound chip coil and its characteristic adjusting method |
| JP2004146683A (en) * | 2002-10-25 | 2004-05-20 | Tdk Corp | Surface-mount common mode noise filter |
| CN201126753Y (en) * | 2007-07-11 | 2008-10-01 | 达方电子股份有限公司 | Transformer and once siding group thereof as well as tube drive circuit |
| CN101299381A (en) * | 2008-03-14 | 2008-11-05 | 中国航天科技集团公司第五研究院第五一四研究所 | Coiling method for mutual inductor and products produced thereby |
| CN202711903U (en) * | 2012-07-06 | 2013-01-30 | 富士康(昆山)电脑接插件有限公司 | Inductance element |
-
2014
- 2014-01-14 CN CN201410015276.7A patent/CN103887041A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366314A (en) * | 2001-01-12 | 2002-08-28 | 东光株式会社 | Leakage magnetic type power conversion transformer |
| CN1405803A (en) * | 2001-08-09 | 2003-03-26 | 株式会社村田制作所 | Wound chip coil and its characteristic adjusting method |
| JP2004146683A (en) * | 2002-10-25 | 2004-05-20 | Tdk Corp | Surface-mount common mode noise filter |
| CN201126753Y (en) * | 2007-07-11 | 2008-10-01 | 达方电子股份有限公司 | Transformer and once siding group thereof as well as tube drive circuit |
| CN101299381A (en) * | 2008-03-14 | 2008-11-05 | 中国航天科技集团公司第五研究院第五一四研究所 | Coiling method for mutual inductor and products produced thereby |
| CN202711903U (en) * | 2012-07-06 | 2013-01-30 | 富士康(昆山)电脑接插件有限公司 | Inductance element |
Cited By (40)
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|---|---|---|---|---|
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| CN107045923A (en) * | 2016-02-09 | 2017-08-15 | 株式会社村田制作所 | Coil component |
| CN107045923B (en) * | 2016-02-09 | 2019-01-15 | 株式会社村田制作所 | Coil component |
| US11037720B2 (en) | 2016-04-06 | 2021-06-15 | Murata Manufacturing Co., Ltd. | Coil component |
| JP2017188568A (en) * | 2016-04-06 | 2017-10-12 | 株式会社村田製作所 | Coil component |
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